.dji-zh-CN {
    font-family: "Microsoft YaHei", "Open Sans", "PingFang SC", "Helvetica Neue", "Hiragino Sans GB", "WenQuanYi Micro Hei", Arial, sans-serif
}
.nav{
    width: 100%;
    height: 64px;
    margin: auto;
    background:0 0;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 900;
}
.nav-content
{
   width: 1200px;
   display: flex;
   margin: 0 auto;
}
.site_header_logo{
    width: 84px;
    height: 64px;
}
.site_header_category{
    flex: 1;
    display: flex;
    justify-content:space-between;
}

ul.navbar-category{
    list-style: none;
    display: flex;
    vertical-align: baseline;
    box-sizing: content-box;
    margin: 0 auto;
    padding: 12px 0;
}

ul.navbar-category>li.category-item{

    width: 120px;
    text-align: center;
    
}

ul.navbar-category>li.category-item>a{
   /* padding: 25px 16px; */
   font-size: 14px;
   line-height: 14px;
   font-weight: 400;
   cursor: pointer;
   color: white;
   padding:10px 0;
}

.control-btn {
    position: absolute;
    height: 96px;
    width: 48px;
    background-color: rgba(0, 0, 0, 0);
    top: 50%;
    margin-top: -64px;
    z-index: 400;
    transition: all .4s;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    cursor:pointer
}
.control-btn:hover{
    background-color: rgba(0, 0, 0, .3);
}
.swiper-control-next .control-btn{
    right: 0;
    transform:rotate(180deg)
}
.swiper-control-pre .control-btn{
    left:0;
}
.arrow-icon {
    width: 10px;
    height: 20px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-image: url()
}


div.sub-nav
{
    margin: 10px auto;
    position:absolute;
    background-color: #272727;
    width: 120px;
    max-height: 0;
    overflow: hidden;
    transition: all .3s linear;
}

li.category-item:hover>div.sub-nav ,li.category-item>a:hover+div.sub-nav , div.sub-nav:hover {

    max-height: 300px;
    transition: all .8s linear;
}
li.category-item>div>ul{
    list-style: none;
    padding: 0;
}
li.category-item>div.sub-nav>ul>li{
     
    text-align: center;
    padding:  10px 0;
    color: white;
}
li.category-item>div.sub-nav>ul>li:hover{
    background-color: white;
    color: #272727;
}
li.category-item>div.sub-nav>ul>li>a{
    font-size: 14px;
}
 